Question No: 225 – (Topic 7)

After testing various dynamic IPv6 address assignment methods, an engineer decides that more control is needed when distributing addresses to clients. Which two advantages does DHCPv6 have over EUI-64 (Choose two.)

DHCPv6 requires less planning and configuration than EUI-64 requires.

DHCPv6 allows for additional parameters to be sent to the client, such as the domain name and DNS server.

DHCPv6 providers tighter control over the IPv6 addresses that are distributed to clients.

DHCPv6 does not require the configuration of prefix pools.

DHCPv6 does not require neighbor and router discovery on the network segment.

Answer: A,B

Question No: 226 – (Topic 7)

Refer to the exhibit.

A network engineer has configured GRE between two IOS routers. The state of the tunnel interface is continuously oscillating between up and down. What is the solution to this problem?

Create a more specific static route to define how to reach the remote router.

Create a more specific ARP entry to define how to reach the remote router.

Save the configuration and reload the router.

Check whether the internet service provider link is stable

Answer: A

Question No: 227 DRAG DROP – (Topic 7)

Drag and drop the Cisco Express Forwarding adjacency types from the left to the correct type of processing on the right.

Answer:

Question No: 228 – (Topic 7)

What are three IPv6 transition mechanisms? (Choose three)

6to4 tunneling

VPN tunneling

GRE tunneling

ISATAP tunneling

PPP tunneling

Teredo tunneling

Answer: A,D,F Explanation:

Below is a summary of IPv6 transition technologies:

6 to 4 tunneling: This mechanism allows IPv6 sites to communicate with each other over the IPv4 network without explicit tunnel setup. The main advantage of this technology is that it requires no end-node reconfiguration and minimal router configuration but it is not intended as a permanent solution.

ISATAP tunneling (Intra-Site Automatic Tunnel Addressing Protocol): is a mechanism for transmitting IPv6 packets over IPv4 network. The word 鈥渁utomatic鈥?means that once an

ISATAP server/router has been set up, only the clients must be configured to connect to it. Teredo tunneling: This mechanism tunnels IPv6 datagrams within IPv4 UDP datagrams, allowing private IPv4 address and IPv4 NAT traversal to be used.

In fact, GRE tunneling is also a IPv6 transition mechanism but is not mentioned in BSCI so we shouldn’t choose it (there are 4 types of IPv6 transition mechanisms mentioned in BSCI; they are manual, 6-to-4, Teredo and ISATAP).

Question No: 229 – (Topic 7)

What are the default timers for RIPng?

Update: 30 seconds Expire: 180 seconds Flush: 240 seconds

Update: 20 seconds Expire: 120 seconds Flush: 160 seconds

Update: 10 seconds Expire: 60 seconds Flush: 80 seconds

Update: 5 seconds Expire: 30 seconds Flush: 40 seconds

Answer: A

Question No: 230 – (Topic 7)

Which security feature can you enable to control access to the vty lines on a router?